/* * This file is part of the coreboot project. * * coreboot ACPI Table support * written by Stefan Reinauer * * Copyright (C) 2004 SUSE LINUX AG * Copyright (C) 2005-2009 coresystems GmbH * * ACPI FADT, FACS, and DSDT table support added by * Nick Barker , and those portions * Copyright (C) 2004 Nick Barker * * Copyright (C) 2005 ADVANCED MICRO DEVICES, INC. All Rights Reserved. * 2005.9 yhlu add SRAT table generation */ /* * Each system port implementing ACPI has to provide two functions: * * write_acpi_tables() * acpi_dump_apics() * * See Kontron 986LCD-M port for a good example of an ACPI implementation * in coreboot. */ #include #include #include #include #include #include #include #if CONFIG_COLLECT_TIMESTAMPS #include #endif /* FIXME: Kconfig doesn't support overridable defaults :-( */ #ifndef CONFIG_HPET_MIN_TICKS #define CONFIG_HPET_MIN_TICKS 0x1000 #endif u8 acpi_checksum(u8 *table, u32 length) { u8 ret = 0; while (length--) { ret += *table; table++; } return -ret; } /** * Add an ACPI table to the RSDT (and XSDT) structure, recalculate length * and checksum. */ void acpi_add_table(acpi_rsdp_t *rsdp, void *table) { int i, entries_num; acpi_rsdt_t *rsdt; acpi_xsdt_t *xsdt = NULL; /* The RSDT is mandatory... */ rsdt = (acpi_rsdt_t *)rsdp->rsdt_address; /* ...while the XSDT is not. */ if (rsdp->xsdt_address) xsdt = (acpi_xsdt_t *)((u32)rsdp->xsdt_address); /* This should always be MAX_ACPI_TABLES. */ entries_num = ARRAY_SIZE(rsdt->entry); for (i = 0; i < entries_num; i++) { if (rsdt->entry[i] == 0) break; } if (i >= entries_num) { printk(BIOS_ERR, "ACPI: Error: Could not add ACPI table, " "too many tables.\n"); return; } /* Add table to the RSDT. */ rsdt->entry[i] = (u32)table; /* Fix RSDT length or the kernel will assume invalid entries. */ rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i + 1)); /* Re-calculate checksum. */ rsdt->header.checksum = 0; /* Hope this won't get optimized away */ rsdt->header.checksum = acpi_checksum((u8 *)rsdt, rsdt->header.length); /* * And now the same thing for the XSDT. We use the same index as for * now we want the XSDT and RSDT to always be in sync in coreboot. */ if (xsdt) { /* Add table to the XSDT. */ xsdt->entry[i] = (u64)(u32)table; /* Fix XSDT length. */ xsdt->header.length = sizeof(acpi_header_t) + (sizeof(u64) * (i + 1)); /* Re-calculate checksum. */ xsdt->header.checksum = 0; xsdt->header.checksum = acpi_checksum((u8 *)xsdt, xsdt->header.length); } printk(BIOS_DEBUG, "ACPI: added table %d/%d, length now %d\n", i + 1, entries_num, rsdt->header.length); } int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u32 base, u16 seg_nr, u8 start, u8 end) { mmconfig->base_address = base; mmconfig->base_reserved = 0; mmconfig->pci_segment_group_number = seg_nr; mmconfig->start_bus_number = start; mmconfig->end_bus_number = end; return sizeof(acpi_mcfg_mmconfig_t); } int acpi_create_madt_lapic(acpi_madt_lapic_t *lapic, u8 cpu, u8 apic) { lapic->type = 0; /* Local APIC structure */ lapic->length = sizeof(acpi_madt_lapic_t); lapic->flags = (1 << 0); /* Processor/LAPIC enabled */ lapic->processor_id = cpu; lapic->apic_id = apic; return lapic->length; } unsigned long acpi_create_madt_lapics(unsigned long current) { device_t cpu; int cpu_index = 0; for (cpu = all_devices; cpu; cpu = cpu->next) { if ((cpu->path.type != DEVICE_PATH_APIC) || (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) { continue; } if (!cpu->enabled) continue; current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, cpu_index, cpu->path.apic.apic_id); cpu_index++; } return current; } int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr, u32 gsi_base) { ioapic->type = 1; /* I/O APIC structure */ ioapic->length = sizeof(acpi_madt_ioapic_t); ioapic->reserved = 0x00; ioapic->gsi_base = gsi_base; ioapic->ioapic_id = id; ioapic->ioapic_addr = addr; return ioapic->length; } int acpi_create_madt_irqoverride(acpi_madt_irqoverride_t *irqoverride, u8 bus, u8 source, u32 gsirq, u16 flags) { irqoverride->type = 2; /* Interrupt source override */ irqoverride->length = sizeof(acpi_madt_irqoverride_t); irqoverride->bus = bus; irqoverride->source = source; irqoverride->gsirq = gsirq; irqoverride->flags = flags; return irqoverride->length; } int acpi_create_madt_lapic_nmi(acpi_madt_lapic_nmi_t *lapic_nmi, u8 cpu, u16 flags, u8 lint) { lapic_nmi->type = 4; /* Local APIC NMI structure */ lapic_nmi->length = sizeof(acpi_madt_lapic_nmi_t); lapic_nmi->flags = flags; lapic_nmi->processor_id = cpu; lapic_nmi->lint = lint; return lapic_nmi->length; } void acpi_create_madt(acpi_madt_t *madt) { acpi_header_t *header = &(madt->header); unsigned long current = (unsigned long)madt + sizeof(acpi_madt_t); memset((void *)madt, 0, sizeof(acpi_madt_t)); /* Fill out header fields. */ memcpy(header->signature, "APIC", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_madt_t); header->revision = 1; /* ACPI 1.0/2.0: 1, ACPI 3.0: 2, ACPI 4.0: 3 */ madt->lapic_addr = LOCAL_APIC_ADDR; madt->flags = 0x1; /* PCAT_COMPAT */ current = acpi_fill_madt(current); /* (Re)calculate length and checksum. */ header->length = current - (unsigned long)madt; header->checksum = acpi_checksum((void *)madt, header->length); } /* MCFG is defined in the PCI Firmware Specification 3.0. */ void acpi_create_mcfg(acpi_mcfg_t *mcfg) { acpi_header_t *header = &(mcfg->header); unsigned long current = (unsigned long)mcfg + sizeof(acpi_mcfg_t); memset((void *)mcfg, 0, sizeof(acpi_mcfg_t)); /* Fill out header fields. */ memcpy(header->signature, "MCFG", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_mcfg_t); header->revision = 1; current = acpi_fill_mcfg(current); /* (Re)calculate length and checksum. */ header->length = current - (unsigned long)mcfg; header->checksum = acpi_checksum((void *)mcfg, header->length); } /* * This can be overriden by platform ACPI setup code, if it calls * acpi_create_ssdt_generator(). */ unsigned long __attribute__((weak)) acpi_fill_ssdt_generator( unsigned long current, const char *oem_table_id) { return current; } void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id) { unsigned long current = (unsigned long)ssdt + sizeof(acpi_header_t); memset((void *)ssdt, 0, sizeof(acpi_header_t)); memcpy(&ssdt->signature, "SSDT", 4); ssdt->revision = 2; /* ACPI 1.0/2.0: ?, ACPI 3.0/4.0: 2 */ memcpy(&ssdt->oem_id, OEM_ID, 6); memcpy(&ssdt->oem_table_id, oem_table_id, 8); ssdt->oem_revision = 42; memcpy(&ssdt->asl_compiler_id, ASLC, 4); ssdt->asl_compiler_revision = 42; ssdt->length = sizeof(acpi_header_t); acpigen_set_current((char *) current); current = acpi_fill_ssdt_generator(current, oem_table_id); /* (Re)calculate length and checksum. */ ssdt->length = current - (unsigned long)ssdt; ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length); } int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic) { memset((void *)lapic, 0, sizeof(acpi_srat_lapic_t)); lapic->type = 0; /* Processor local APIC/SAPIC affinity structure */ lapic->length = sizeof(acpi_srat_lapic_t); lapic->flags = (1 << 0); /* Enabled (the use of this structure). */ lapic->proximity_domain_7_0 = node; /* TODO: proximity_domain_31_8, local SAPIC EID, clock domain. */ lapic->apic_id = apic; return lapic->length; } int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek, u32 sizek, u32 flags) { mem->type = 1; /* Memory affinity structure */ mem->length = sizeof(acpi_srat_mem_t); mem->base_address_low = (basek << 10); mem->base_address_high = (basek >> (32 - 10)); mem->length_low = (sizek << 10); mem->length_high = (sizek >> (32 - 10)); mem->proximity_domain = node; mem->flags = flags; return mem->length; } /* http://www.microsoft.com/whdc/system/sysinternals/sratdwn.mspx */ void acpi_create_srat(acpi_srat_t *srat) { acpi_header_t *header = &(srat->header); unsigned long current = (unsigned long)srat + sizeof(acpi_srat_t); memset((void *)srat, 0, sizeof(acpi_srat_t)); /* Fill out header fields. */ memcpy(header->signature, "SRAT", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_srat_t); header->revision = 1; /* ACPI 1.0: N/A, 2.0: 1, 3.0: 2, 4.0: 3 */ srat->resv = 1; /* Spec: Reserved to 1 for backwards compatibility. */ current = acpi_fill_srat(current); /* (Re)calculate length and checksum. */ header->length = current - (unsigned long)srat; header->checksum = acpi_checksum((void *)srat, header->length); } /* http://h21007.www2.hp.com/portal/download/files/unprot/Itanium/slit.pdf */ void acpi_create_slit(acpi_slit_t *slit) { acpi_header_t *header = &(slit->header); unsigned long current = (unsigned long)slit + sizeof(acpi_slit_t); memset((void *)slit, 0, sizeof(acpi_slit_t)); /* Fill out header fields. */ memcpy(header->signature, "SLIT", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_slit_t); header->revision = 1; /* ACPI 1.0: N/A, ACPI 2.0/3.0/4.0: 1 */ current = acpi_fill_slit(current); /* (Re)calculate length and checksum. */ header->length = current - (unsigned long)slit; header->checksum = acpi_checksum((void *)slit, header->length); } /* http://www.intel.com/hardwaredesign/hpetspec_1.pdf */ void acpi_create_hpet(acpi_hpet_t *hpet) { acpi_header_t *header = &(hpet->header); acpi_addr_t *addr = &(hpet->addr); memset((void *)hpet, 0, sizeof(acpi_hpet_t)); /* Fill out header fields. */ memcpy(header->signature, "HPET", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_hpet_t); header->revision = 1; /* Currently 1. Table added in ACPI 2.0. */ /* Fill out HPET address. */ addr->space_id = 0; /* Memory */ addr->bit_width = 64; addr->bit_offset = 0; addr->addrl = CONFIG_HPET_ADDRESS & 0xffffffff; addr->addrh = ((unsigned long long)CONFIG_HPET_ADDRESS) >> 32; hpet->id = *(unsigned int*)CONFIG_HPET_ADDRESS; hpet->number = 0; hpet->min_tick = CONFIG_HPET_MIN_TICKS; header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t)); } void acpi_create_facs(acpi_facs_t *facs) { memset((void *)facs, 0, sizeof(acpi_facs_t)); memcpy(facs->signature, "FACS", 4); facs->length = sizeof(acpi_facs_t); facs->hardware_signature = 0; facs->firmware_waking_vector = 0; facs->global_lock = 0; facs->flags = 0; facs->x_firmware_waking_vector_l = 0; facs->x_firmware_waking_vector_h = 0; facs->version = 1; /* ACPI 1.0: 0, ACPI 2.0/3.0: 1, ACPI 4.0: 2 */ } void acpi_write_rsdt(acpi_rsdt_t *rsdt) { acpi_header_t *header = &(rsdt->header); /* Fill out header fields. */ memcpy(header->signature, "RSDT", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_rsdt_t); header->revision = 1; /* ACPI 1.0/2.0/3.0/4.0: 1 */ /* Entries are filled in later, we come with an empty set. */ /* Fix checksum. */ header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t)); } void acpi_write_xsdt(acpi_xsdt_t *xsdt) { acpi_header_t *header = &(xsdt->header); /* Fill out header fields. */ memcpy(header->signature, "XSDT", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_xsdt_t); header->revision = 1; /* ACPI 1.0: N/A, 2.0/3.0/4.0: 1 */ /* Entries are filled in later, we come with an empty set. */ /* Fix checksum. */ header->checksum = acpi_checksum((void *)xsdt, sizeof(acpi_xsdt_t)); } void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt, acpi_xsdt_t *xsdt) { memset(rsdp, 0, sizeof(acpi_rsdp_t)); memcpy(rsdp->signature, RSDP_SIG, 8); memcpy(rsdp->oem_id, OEM_ID, 6); rsdp->length = sizeof(acpi_rsdp_t); rsdp->rsdt_address = (u32)rsdt; /* * Revision: ACPI 1.0: 0, ACPI 2.0/3.0/4.0: 2. * * Some OSes expect an XSDT to be present for RSD PTR revisions >= 2. * If we don't have an ACPI XSDT, force ACPI 1.0 (and thus RSD PTR * revision 0). */ if (xsdt == NULL) { rsdp->revision = 0; } else { rsdp->xsdt_address = (u64)(u32)xsdt; rsdp->revision = 2; } /* Calculate checksums. */ rsdp->checksum = acpi_checksum((void *)rsdp, 20); rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t)); } unsigned long __attribute__((weak)) acpi_fill_hest(acpi_hest_t *hest) { return (unsigned long)hest; } unsigned long acpi_create_hest_error_source(acpi_hest_t *hest, acpi_hest_esd_t *esd, u16 type, void *data, u16 data_len) { acpi_header_t *header = &(hest->header); acpi_hest_hen_t *hen; void *pos; u16 len; pos = esd; memset(pos, 0, sizeof(acpi_hest_esd_t)); len = 0; esd->type = type; /* MCE */ esd->source_id = hest->error_source_count; esd->flags = 0; /* FIRMWARE_FIRST */ esd->enabled = 1; esd->prealloc_erecords = 1; esd->max_section_per_record = 0x1; len += sizeof(acpi_hest_esd_t); pos = esd + 1; switch (type) { case 0: /* MCE */ break; case 1: /* CMC */ hen = (acpi_hest_hen_t *) (pos); memset(pos, 0, sizeof(acpi_hest_hen_t)); hen->type = 3; /* SCI? */ hen->length = sizeof(acpi_hest_hen_t); hen->conf_we = 0; /* Configuration Write Enable. */ hen->poll_interval = 0; hen->vector = 0; hen->sw2poll_threshold_val = 0; hen->sw2poll_threshold_win = 0; hen->error_threshold_val = 0; hen->error_threshold_win = 0; len += sizeof(acpi_hest_hen_t); pos = hen + 1; break; case 2: /* NMI */ case 6: /* AER Root Port */ case 7: /* AER Endpoint */ case 8: /* AER Bridge */ case 9: /* Generic Hardware Error Source. */ /* TODO: */ break; default: printk(BIOS_DEBUG, "Invalid type of Error Source."); break; } hest->error_source_count ++; memcpy(pos, data, data_len); len += data_len; header->length += len; return len; } /* ACPI 4.0 */ void acpi_write_hest(acpi_hest_t *hest) { acpi_header_t *header = &(hest->header); memset(hest, 0, sizeof(acpi_hest_t)); memcpy(header->signature, "HEST", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length += sizeof(acpi_hest_t); header->revision = 1; acpi_fill_hest(hest); /* Calculate checksums. */ header->checksum = acpi_checksum((void *)hest, header->length); } #if CONFIG_HAVE_ACPI_RESUME void suspend_resume(void) { void *wake_vec; /* If we happen to be resuming find wakeup vector and jump to OS. */ wake_vec = acpi_find_wakeup_vector(); if (wake_vec) { /* Call mainboard resume handler first, if defined. */ if (mainboard_suspend_resume) mainboard_suspend_resume(); acpi_jump_to_wakeup(wake_vec); } } /* This is to be filled by SB code - startup value what was found. */ u8 acpi_slp_type = 0; static int acpi_is_wakeup(void) { /* Both resume from S2 and resume from S3 restart at CPU reset */ return (acpi_slp_type == 3 || acpi_slp_type == 2); } static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp) { if (strncmp((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0) return NULL; printk(BIOS_DEBUG, "Looking on %p for valid checksum\n", rsdp); if (acpi_checksum((void *)rsdp, 20) != 0) return NULL; printk(BIOS_DEBUG, "Checksum 1 passed\n"); if ((rsdp->revision > 1) && (acpi_checksum((void *)rsdp, rsdp->length) != 0)) return NULL; printk(BIOS_DEBUG, "Checksum 2 passed all OK\n"); return rsdp; } static acpi_rsdp_t *rsdp; void *acpi_get_wakeup_rsdp(void) { return rsdp; } void *acpi_find_wakeup_vector(void) { char *p, *end; acpi_rsdt_t *rsdt; acpi_facs_t *facs; acpi_fadt_t *fadt; void *wake_vec; int i; rsdp = NULL; if (!acpi_is_wakeup()) return NULL; printk(BIOS_DEBUG, "Trying to find the wakeup vector...\n"); /* Find RSDP. */ for (p = (char *)0xe0000; p < (char *)0xfffff; p += 16) { if ((rsdp = valid_rsdp((acpi_rsdp_t *)p))) break; } if (rsdp == NULL) return NULL; printk(BIOS_DEBUG, "RSDP found at %p\n", rsdp); rsdt = (acpi_rsdt_t *) rsdp->rsdt_address; end = (char *)rsdt + rsdt->header.length; printk(BIOS_DEBUG, "RSDT found at %p ends at %p\n", rsdt, end); for (i = 0; ((char *)&rsdt->entry[i]) < end; i++) { fadt = (acpi_fadt_t *)rsdt->entry[i]; if (strncmp((char *)fadt, "FACP", 4) == 0) break; fadt = NULL; } if (fadt == NULL) return NULL; printk(BIOS_DEBUG, "FADT found at %p\n", fadt); facs = (acpi_facs_t *)fadt->firmware_ctrl; if (facs == NULL) { printk(BIOS_DEBUG, "No FACS found, wake up from S3 not " "possible.\n"); return NULL; } printk(BIOS_DEBUG, "FACS found at %p\n", facs); wake_vec = (void *)facs->firmware_waking_vector; printk(BIOS_DEBUG, "OS waking vector is %p\n", wake_vec); return wake_vec; } #if CONFIG_SMP extern char *lowmem_backup; extern char *lowmem_backup_ptr; extern int lowmem_backup_size; #endif #define WAKEUP_BASE 0x600 void (*acpi_do_wakeup)(u32 vector, u32 backup_source, u32 backup_target, u32 backup_size) __attribute__((regparm(0))) = (void *)WAKEUP_BASE; extern unsigned char __wakeup, __wakeup_size; void acpi_jump_to_wakeup(void *vector) { u32 acpi_backup_memory = (u32)cbmem_find(CBMEM_ID_RESUME); if (!acpi_backup_memory) { printk(BIOS_WARNING, "ACPI: Backup memory missing. " "No S3 resume.\n"); return; } #if CONFIG_SMP // FIXME: This should go into the ACPI backup memory, too. No pork saussages. /* * Just restore the SMP trampoline and continue with wakeup on * assembly level. */ memcpy(lowmem_backup_ptr, lowmem_backup, lowmem_backup_size); #endif /* Copy wakeup trampoline in place. */ memcpy((void *)WAKEUP_BASE, &__wakeup, (size_t)&__wakeup_size); #if CONFIG_COLLECT_TIMESTAMPS timestamp_add_now(TS_ACPI_WAKE_JUMP); #endif acpi_do_wakeup((u32)vector, acpi_backup_memory, CONFIG_RAMBASE, HIGH_MEMORY_SAVE); } #endif